Purdy AND1781FST-LED - Manual (Page 2)

Displays
Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918
Tel: 408-523-8200 • Fax: 408-733-1287 • [email protected] • www.purdyelectronics.com
11/07/12 2
Optical Specifications
Item Symbol Condition Min. Typ. Max. Degree
Viewing Angle Range (V) θ Cr ≥ 2 30 — 60 degree
(H) ψ -45 — 45 degree
Contrast Ratio CR — 5 —
Response Time T rise — 200 300 ms
T fall — 200 300 ms
AND1781FST-LED
Intelligent Character Display
Electrical Characteristics
Item Symbol Condition Min. Typ. Max. Unit
Supply Voltage for Logic VDD-VSS – 4.75 5.0 5.25 V
Supply Voltage for LCD VDD-V0
Ta = -20ºC — — 13.9 V
Ta = 25ºC 12.1 12.5 12.9 V
Ta = +70ºC 10.1 — — V
Input High Voltage VIH — VDD-2.2 — VDD V
Input Low Voltage VIL — 0 — 0.8 V
Output High Voltage VOH — VDD-0.3 — VDD V
Output Low Voltage VOL — 0 — 0.3 V
Supply Current IDD VDD=5V 12 16 20 mA
Interface Pin Assignment
Pin No. Pin Out Function Description Level Pin No Pin Out Function Description Level
1 FG Frame Ground (Connected to bezel) — 11 DB0 Data Bus Line H/L
2 VSS Ground — 12 DB1 Data Bus Line H/L
3 VDD Power Supply — 13 DB2 Data Bus Line H/L
4 V0 Power Supply for LCD Driver — 14 DB3 Data Bus Line H/L
5 WR Data write. Write data into T6963 when
WR=L
L 15 DB4 Data Bus Line H/L
6 RD Data read. Read data from T6963 when
RD=L
L 16 DB5 Data Bus Line H/L
7 CE L: Chip Enable L 17 DB6 Data Bus Line H/L
8 C/D Wr = “l”, C/D = “H”: Command Write; WR =
“L”, C/D = “L:”: Data Write; RD = “L”, C/D =
“H”: Status Read; RD = “L”, C/D = “L”: Data
Read
H/L 18 DB7 Data Bus Line H/L
9 Vee Negative Voltage — 19 FS H:Pins for selection of font; H: 6*8,
L: 8*8
H/L
10 RESET H: Normal; L: Initialize T6963 H/L 20 N/C No connection —